阅读说明：本技术 一种适应于异型巷道的伸缩杆式端头支架 (Telescopic rod type end bracket suitable for special-shaped roadway ) 是由 甄亚东 王晓辉 吴向成 景真 杨国平 于 2021-08-16 设计创作，主要内容包括：本发明公开了一种适应于异型巷道的伸缩杆式端头支架,在端头支架靠近下帮位置的顶梁与底座之间设置了伸缩机构。伸缩机构包括插接在一起的伸缩杆和伸缩箱。伸缩杆为长条状的箱体,伸缩箱与底座焊接在一起。伸缩杆的横截面为矩形或圆形或椭圆形。端头支架为工作面端头支架或巷道超前支架。伸缩杆可抵消顶梁斜向上分力,避免对四连杆机构造成损坏,具有这种机构的端头支架可以很好的适用异型巷道支护。(The invention discloses a telescopic rod type end bracket suitable for a special-shaped roadway. The telescopic mechanism comprises a telescopic rod and a telescopic box which are inserted together. The telescopic rod is a long-strip-shaped box body, and the telescopic box is welded with the base together. The cross section of the telescopic rod is rectangular, circular or elliptical. The end bracket is a working face end bracket or a roadway advance bracket. The telescopic rod can offset the component force of the top beam in the oblique upward direction, the four-bar mechanism is prevented from being damaged, and the end bracket with the mechanism can be well suitable for supporting special-shaped roadways.)

1. A telescopic rod type end support suitable for a special-shaped roadway is characterized in that a telescopic mechanism is arranged between a top beam and a base, wherein the top beam is close to a lower side of the end support.

2. The telescopic rod type end bracket applicable to the special-shaped roadway according to claim 1, wherein the telescopic mechanism comprises a telescopic rod and a telescopic box which are spliced together.

3. The telescopic rod type end bracket applicable to the special-shaped tunnel according to claim 2, wherein the telescopic rod is an elongated box body, and the telescopic box is welded with the base.

4. The telescopic rod type end bracket applicable to the special-shaped roadway according to claim 3, wherein the cross section of the telescopic rod is rectangular, circular or elliptical.

5. The telescopic rod type end bracket applicable to the special-shaped roadway according to any one of claims 1 to 4, wherein the end bracket is a working face end bracket or a roadway advance bracket.

Technical Field

The invention relates to a hydraulic support for a coal mine, in particular to a telescopic rod type end support suitable for a special-shaped roadway.

Background

The fully mechanized mining face and the horizontal plane can have an inclination angle under the influence of the geological structure. In the coal mine production, a working surface with the angle less than 5 degrees is called a nearly horizontal working surface; the working surface with the angle larger than 15 degrees is called a large-inclination working surface.

As shown in fig. 1, the top plate of the roadway close to the horizontal working surface is horizontal, and the whole section of the roadway is rectangular and is a rectangular roadway;

as shown in fig. 2, the top plate of the roadway with the large-dip-angle working surface is inclined, and the whole section of the roadway is trapezoidal, which is also called a special-shaped roadway.

The roadway pressure within 20m close to the fully mechanized coal mining face is large, an end bracket is required to support, and the section of the end bracket adopted by the common rectangular roadway is shown in figure 3.

Because the section shape is irregular, it is relatively difficult to arrange the end bracket in the special-shaped tunnel, and finding an end bracket suitable for the special-shaped tunnel is an important factor for success of a large-dip-angle working face.

The prior art is as follows:

as shown in fig. 4a and 4b, the common rotary top beam end bracket adopts a reversed loader in a central mode, and the reversed loader is arranged between a left upright post and a right upright post. The top beam and the base are both integrated, and the rotating mechanism is arranged between the top beam and the shield beam, so that the support top beam can adapt to uneven angles of the top beam.

The prior art has the following disadvantages:

due to the uneven roof, the vertical columns generate a component force obliquely upwards along the roof when the supporting roof is lifted, as shown by the arrow in fig. 4b, and the component force is too large, so that the shield beam and the front and rear connecting rods are damaged.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The invention aims to provide a telescopic rod type end bracket suitable for a special-shaped roadway, which aims to solve the technical problems in the prior art.

The purpose of the invention is realized by the following technical scheme:

the invention relates to a telescopic rod type end bracket applicable to a special-shaped roadway.

Compared with the prior art, the telescopic rod type end support suitable for the special-shaped roadway provided by the invention utilizes the telescopic mechanism to offset the upward component force of the top beam, and solves the problem that the shield beam and the front and rear connecting rods are easily damaged by the component force of the top beam. Is more suitable for being used in special-shaped roadways.

Drawings

Fig. 1 is a schematic diagram of a rectangular roadway in the prior art.

Fig. 2 is a schematic diagram of a special-shaped roadway in the prior art.

Fig. 3 is a schematic cross-sectional view of a rectangular roadway end support in the prior art.

Fig. 4a and 4b are schematic side and end views of a conventional rotary cap head bracket according to the prior art.

Fig. 5a and 5b are schematic side and end views of the telescopic rod type end bracket adapted to the special-shaped roadway according to the embodiment of the invention.

In the figure: 1: top beam, 2: top beam rotary mechanism, 3: shield beam, 4: a base, 5: column, 6: front and rear links, 5-1: left column, 5-2: right pillar, 7: bellows, 6: a telescopic rod.

Detailed Description

The technical scheme in the embodiment of the invention is clearly and completely described below by combining the attached drawings in the embodiment of the invention; it is to be understood that the described embodiments are merely exemplary of the invention, and are not intended to limit the invention to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The terms that may be used herein are first described as follows:

the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".

The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.

The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.

The term "parts by mass" is intended to indicate a mass ratio relationship between a plurality of components, for example: if X component is X parts by mass and Y component is Y parts by mass, the mass ratio of the X component to the Y component is X: Y; 1 part by mass may represent any mass, for example: 1 part by mass may be expressed as 1kg or 3.1415926 kg. The sum of the parts by mass of all the components is not necessarily 100 parts, and may be more than 100 parts, less than 100 parts, or equal to 100 parts. Parts, ratios and percentages described herein are by mass unless otherwise indicated.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.

When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as ranges of values, the ranges are to be understood as specifically disclosing all ranges formed from any pair of upper, lower, and preferred values within the range, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 ~ 8" is recited, then the numerical range should be interpreted to include ranges of "2 ~ 7", "2 ~ 6", "5 ~ 7", "3 ~ 4 and 6 ~ 7", "3 ~ 5 and 7", "2 and 5 ~ 7", and the like. Unless otherwise indicated, the numerical ranges recited herein include both the endpoints thereof and all integers and fractions within the numerical range.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.

Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.

The invention relates to a telescopic rod type end bracket applicable to a special-shaped roadway.

The telescopic mechanism comprises a telescopic rod and a telescopic box which are inserted together.

The telescopic rod is a long-strip-shaped box body, and the telescopic box is welded with the base.

The cross section of the telescopic rod is rectangular, circular or elliptical.

The end support is a working face end support or a roadway advance support.

In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.

Example 1

As shown in fig. 5a and 5b, on the basis of a common rotary top beam end bracket, a telescopic mechanism is arranged between a top beam of the end bracket close to the lower upper and a base. The telescopic mechanism consists of a telescopic rod and a telescopic box.

The telescopic link is rectangular box body, and the telescopic box is welded with the base together. In the movement process of the bracket, the component force of the top beam in the oblique direction can be counteracted by the rigidity of the telescopic rod. The four-bar linkage mechanism of the bracket is ensured not to be damaged.

According to the invention, the telescopic mechanism is arranged between the top beam of the end support and the base, and the upward component force of the top beam is counteracted by using the telescopic mechanism, so that the problem that the shield beam and the front and rear connecting rods are easily damaged due to the component force of the top beam is solved. Is more suitable for being used in special-shaped roadways.

In the concrete application, the telescopic rod mechanism can be applied to an end support and a fore support, and can be applied to a roadway support on a large-inclination-angle working face.

The telescopic rod can be a box body with a rectangular section and also can be a box body with a circular section.

In conclusion, the telescopic rod is arranged on the end bracket in the embodiment of the invention, the telescopic rod can offset the component force of the top beam in the oblique upward direction, the four-bar mechanism is prevented from being damaged, and the end bracket with the mechanism can be well suitable for supporting special-shaped roadways.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.